make off and cur_field_off absolute in Sec_Hover_Fn

src/render.cpp

@@ -213,7 +213,7 @@ void viewer_jump_to_cluster(App_State &app, u64 cluster_idx)
 }
 
 internal
-void imgui_render_string_tree(Arena *arena, String8_Node *root, u16 indent = 0)
+void imgui_render_string_tree(Arena *arena, String8_Node *root, String8_Node *highlighted, u16 indent = 0)
 {
   String8 indent_str;
   if (indent) {
@@ -225,10 +225,13 @@ void imgui_render_string_tree(Arena *arena, String8_Node *root, u16 indent = 0)
   }
   
   for (String8_Node *node = root; node; node = node->next) {
+    if (node == highlighted)
+      ImGui::TextColored(ImColor(1.0f, 1.0f, 0.0f), "%s%s", indent_str.c(), node->str.c());
+    else
       ImGui::Text("%s%s", indent_str.c(), node->str.c());
 
     if (node->first_child)
-      imgui_render_string_tree(arena, node->first_child, indent + 2);
+      imgui_render_string_tree(arena, node->first_child, highlighted, indent + 2);
   }
 }
 
@@ -397,7 +400,7 @@ void update_and_render(Arena *arena, App_State &app, f32 delta_time_ms)
           ImGui::TextColored(ImColor(0.5f, 0.5f, 0.5f), "(Hint: press Alt for single-field hover information)");
         if (hovered_section.id == Sec_Page)
           ImGui::TextColored(ImColor(0.5f, 0.5f, 0.5f), "(Hint: Shift-Click to jump to the start of this page)");
-        imgui_render_string_tree(scratch.arena, hover_info.desc->head);
+        imgui_render_string_tree(scratch.arena, hover_info.desc->head, hover_info.highlighted_desc);
         app.viewer.hovered_range = hover_info.rng;
 
         // Shift-clicking on a page section will update the current page in the legend

src/rntuple.h

@@ -140,7 +140,7 @@ internal const String8 section_names[Sec_COUNT] = {
   str8("None"),
   str8("TFile Header"),
   str8("TFile Object"),
-  str8("TFile Info"),
+  str8("TFile Streamer Info"),
   str8("TFile FreeList"),
   str8("TKey List"),
   str8("RNTuple Anchor"),

src/rntviewer.cpp

@@ -26,8 +26,9 @@
 #include <cmath>
 #include <cstring>
 #include <cassert>
-#include <inttypes.h> // PRIu64
+#include <inttypes.h> // PRIu64, ...
 
+#include <type_traits> // For std::decay_t and std::is_same_v
 #include <chrono>
 
 #ifdef DEBUG
@@ -45,7 +46,7 @@
 #endif // RNT_NO_GFX
 
 #define V_MAJOR "0"
-#define V_MINOR "5"
+#define V_MINOR "6"
 
 #include "root/root_inc.h"
 #include "root/RMicroFileReader.hxx"

src/root/RMicroFileReader.cxx

@@ -1223,11 +1223,8 @@ RMicroFileReader::GetNTupleProper(const char *ntupleName)
       // @Incomplete: each section has a differently-sized RBlob, we need to account for that!
       RTFString blobName { kBlobClassName };
       RTFKey dummy;
-      // FIXME: it seems that sometimes even if IsBigFile() == false we get a big header size!
-      if (fileHeader.IsBigFile())
       dummy.MakeBigKey();
-      fileInfo.rblob_key_header_nbytes = dummy.GetHeaderSize() + blobName.GetSize() + 2 * RTFString{}.GetSize();
-      printf("nbytes: %lu\n", fileInfo.rblob_key_header_nbytes);
+      fileInfo.rblob_key_header_nbytes = dummy.fKeyHeaderSize + blobName.GetSize() + 2 * RTFString{}.GetSize();
    }
    // @----
    ReadBuffer(ntuple, objNbytes, offset);

src/str.cpp

@@ -39,37 +39,52 @@ String8 to_pretty_size(Arena *arena, u64 bytes)
 }
 
 internal
-String8_Node *push_str8_node(Arena *arena, String8_Node *prev, const char *fmt, ...)
+String8_Node *push_str8_node_v(Arena *arena, String8_Node *prev, const char *fmt, va_list args)
 {
+  va_list args2;
+  va_copy(args2, args);
+
   String8_Node *snode = arena_push<String8_Node>(arena);
 
-  va_list args;
-  va_start(args, fmt);
-  snode->str = push_str8fv(arena, fmt, args);
-  va_end(args);
+  snode->str = push_str8fv(arena, fmt, args2);
 
   if (prev) {
     prev->next = snode;
     snode->head = prev->head;
+    snode->parent = prev->parent;
   } else {
     snode->head = snode;
   }
   snode->prev = prev;
 
+  va_end(args2);
   return snode;
 }
 
 internal
-String8_Node *push_str8_node_child(Arena *arena, String8_Node *parent, const char *fmt, ...)
+String8_Node *push_str8_node(Arena *arena, String8_Node *prev, const char *fmt, ...)
 {
-  assert(parent);
-  
-  String8_Node *snode = arena_push<String8_Node>(arena);
-
   va_list args;
   va_start(args, fmt);
-  snode->str = push_str8fv(arena, fmt, args);
+  String8_Node *snode = push_str8_node_v(arena, prev, fmt, args);
   va_end(args);
+  return snode;
+}
+
+internal
+String8_Node *push_str8_node_child_v(Arena *arena, String8_Node *parent, const char *fmt, va_list args)
+{
+  va_list args2;
+  va_copy(args2, args);
+  if (!parent) {
+    // If there is no parent, just behave the same as push_str8_node.
+    String8_Node *snode = push_str8_node_v(arena, nullptr, fmt, args2);
+    va_end(args2);
+    return snode;
+  }
+
+  String8_Node *snode = arena_push<String8_Node>(arena);
+  snode->str = push_str8fv(arena, fmt, args2);
 
   snode->prev = parent->last_child;
   if (parent->first_child) {
@@ -79,7 +94,19 @@ String8_Node *push_str8_node_child(Arena *arena, String8_Node *parent, const cha
     parent->last_child = parent->first_child = snode;
   }
   snode->head = parent->head;
+  snode->parent = parent;
 
+  va_end(args2);
+  return snode;
+}
+
+internal
+String8_Node *push_str8_node_child(Arena *arena, String8_Node *parent, const char *fmt, ...)
+{
+  va_list args;
+  va_start(args, fmt);
+  String8_Node *snode = push_str8_node_child_v(arena, parent, fmt, args);
+  va_end(args);
   return snode;
 }
 

src/str.h

@@ -14,5 +14,6 @@ struct String8 {
 struct String8_Node {
   String8_Node *next, *prev, *head;
   String8_Node *first_child, *last_child;
+  String8_Node *parent;
   String8 str;
 };